雅思阅读猜词技巧：针对性解释

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& Y; L5 E0 L2 R1 i  b. I　　1. 根据定义猜测词义

" Q0 V5 G+ c4 s　　如果生词是句子或段落所解释的定义，理解句子或段落本身就是推断词义。
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　　例如： anthropology is the scientific study of man. 由定义可知，anthropology就是“研究人类的科学”。
( j. [" x" f/ Y7 a! ?/ `In slang the term "jam" constitutes a state of being in which a person finds himself or herself in a difficult situation. 同样，从上下文的定义可知jam一词在俚语中的意思是“困境”。 定义句的谓语动词多为：be, mean, deal with, be considered, to be, refer to, be called, be known as, define, represent, signify, constitute等。

　　2. 根据复述猜测词义

' N, @2 ^! F8 _  P, ~　　虽然复述不如定义那样严谨、详细，但是提供的信息足以使阅读者猜出生词词义。 复述部分可以适当词、短语或是从句。
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　　同位语 Semantics, the study of the meaning of words, is necessary if you are to speak and read intelligently.

- h# E/ }3 I$ O2 }' ?　　此例逗号中短语意为“对词意义进行研究的学科”。该短语与前面生词semanties式同位关系，因此我们不难猜出semanties指“语义学”。

　　在复述中构成同位关系的两部分之间多用逗号连接，有时也使用破折号，冒号，分 号，引号，和括号等。
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" c. K5 B$ ]" h" V) W0 X　　Capacitance, or the ability to store electric charge, is one of the most common characteristics of electronic circuits.由同位语我们很快猜出生词capacitance词义---电容量。
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　　需要注意的是：同位语前 还常有or, similarly, that is to say, in other words, namely, or other, say i.e. 等副词或短语出现。
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　　定语从句 Krabacber suffers from SAD, which is short for seasonal affective disorder, a syndrome characterized by severe seasonal mood swings.
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- ^( B1 k; _7 q% Z2 K9 y& Y　　根据生词SAD后面定语从句which is short for seasonal affective disorder和同位语 a syndrome characterized by severe seasonal mood swings, 我们可以推断出 SAD含义，即“季节性情绪紊乱症”。
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　　3. 根据举例猜测词义
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% j1 y* |- G5 E2 x　　恰当的举例能够提供猜测生词的重要线索，例如：
9 Q* z# U" `# ^% E　　The consequences of epochal events such as wars and great scientific discoveries are not confined to a small geographical area as they were in the past. 句中“战争”和“重大科学发现”是生词的实例，通过它们我们可以猜出epochal的大致词义“重要的”，这与其确切含义“划时代的”十分接近。